Skiving-machine.



No. 823,578. PATENTED JUNE 19, 1905,

0. H; BAYLEY.

smv/'ING MACHINE.

APPLICATION FILED JUNE 1l, 1902.

4 SHEETS-SHEET 1.

AFull \/\/:TNE55E5 Ilm/ENTIER- PTENTED JUNEIQ, 1906.

y G. E. BAYLBY.

`SKIVINGl MACHINE. APPLIOATION FILED JUNE 111902.

'TS-SHEET 2,

-WSTN SEEQ "chine in Which 1.5

UNTED STATES n CHARLES 'BAYLEY,- oF UNITED sHoE .MAcHINERr PATERSOMNEW 'skviNG-MAGHINB To @ZZ-dichten?, t concern,.-

Beit known that I, CHARLEs H. BAYLEY, a citizen of the'United States, residing vat Boston, 1n' the county of Suffolk-and State of have invented certain Ylfm Massachusetts, vprovements in Skiving-Machines, of which the following description, in connection With the accompanying drawings, is a s ecica- -.tion, like reference characters on the rawings representing like parts in the several figures. This invention relates. toa machine for skivin leather, and is erein described as embodied in a maa rotar disk cutter is em 'ployed set\ in proper re ation to a Work-support so that 'as a piece of` leather is fed to- Ward the of the leather as to edge sklved or beveled.

.Many portions of the machine to Which the leave said present invention isshown as applied aresubstantiall the same as corresponding parts of the mac e shown and described in United States Letters Patent me November 14, 1899.

One-feature of the invention consists in an y improvement in the knife-actuating means toward and from the 35 meshing beveled gears,

' and'from the feeding mecl 4o whereby the ,operative connections of the knife to the driving-shaft are adjusted ysimultaneously with the adjustment of the knife Work-feeding mechanism, such'adjustment of the knife being ire-,. quently necessaryior different Work. 1

It has been customary to actuatethe skiving-'knife from the driving-shaft by intermachineshown inthe mentioned. In adjustin by means Which'is simultaneously ya Specification of Letters Patent. .Applause med June 11, 1902. "serial No. 111,163.,

and is shown in the drawings ing-shaft t rotary ycutter' a strip Willbe s0 cut' from the edge No. 636,942, granted to machine. Fig. 2 is a side elevation `als illustrated in the 1 Letters Patent ,above the knife. towardy anism 'for the 'purypose of yaryingthe width of the skivingit' F the feeding-disk and grinder.' removed, and f with certain'parts bro show the means for tilting thekniie.y Fi

as been necessary 1n machines so arran ed,

vtionf 6 and .f iirst, to'loosen' the gear; cbrried yby the ivf knifel to .the f new 'l osition vv' ich .it ,geanfcarrie'd the.

o ft emac To tnercome,this objectiomi, have connected the knife-tothe drivinv shaft i J'ued e same'operationWhich'adjuststhe'knife -f riesame?,1906-# qiiired--- to occup Without any manipulation on the` part oftlie operator. 1 5`5 The inventionurtherjconsists inprovidinig an additional adjustable support y.f or the'.' knifeshaft, by means of which the/usual' to the v'ariouspositions theknfe' is-re tendencyof the shaft to Wear it'bearin unevenly dueto the neutralized. .f' a, It has been foundthat Wherefthe knife-- shaft for rotary skiving-inachineslhas been actuated b ajbelt connection with the driv-u,

e lateral strainl of the belt on-the y65 shaft causes the shaft totilt towmjd-orlleiside,iy l and consequently to Wear its'bearings evenly, so that itis necessary to' 1eneW 44 such 1;. bearings frequently in order to keep the knife if running steadily. I have therefore provided 7q` lateral pulley 4strain 1s a support-to resist this lateral strainfon 'the` knife-shaft and have so mounted thissu port that it may be adjusted Sto position tlib` ,f-g shaft accurately and to comp'ensatefor Wear.

.l These improvements are embodied-'inthe 75 .l machine shown in thev accompanyingdrawin s,in Which-' igure 1 is a side elevation of the complete:

of the ma-.f chine withthe frame removed which carries 8o: f... the knife and the air of idle pulleys herein-." after tojbe referredp to. Fig. 3 is a Side e1ev'a- Ition ofsaid knife-car ing frame..v 4

an elevation of the knilZ-carrying frame from: the side' opposite to' that shown in 13" 3: 85*A Fig. 5 arear end elevation ofthe madEi-he Fig. 6 1s a side elevation' of the machinefwit 1g. Sis a top planvieW-.of

rest npona table oroth'erb sha cto su portand Work.

14 indicates a spring on the shaft 12. The spring is arranged to bear at its upper end against the shaft-bearing 1, and at its lower end against a movable collar 12EL on the shaft This s ring thereby operates to press the feed-dis yieldingly upon the Work carried by the Work-support 8.

60 indicates a suitable edge gage to aid the operator improperly presenting the work.

B indicates a knife-frame, which is adjustably secured to the machine-frame A`by a dovetailed connection 37 and a clampingscrew 31. (See Fig. 7.) A knife-bracket B is attached to the frame B by the screw-bolt 2 5 33' and clamping-screw 34. Theclamping- 40 Figs. 6 and 7.)

' screw`34 passes through a slot b2 in the knifebracketwhich permits of the bracket being f tilted on the screw-bolt 33 as a pivot and then secured in adjusted position b the -screw. To facilitate the tilting of 'the e-bracket, its rear end is provided with worm-teeth b3, adapted to be engaged by a thread on an adjustin -s'crew X. The f knife-bracket supports a dis r knife 22. (See The knife-shaft rotates in` a fixed sleeve 200. The sleeve is provided with Van enlarged portion 201, recessed or slotted to 'receive a collar 202, fixed on the shaft. (See The enlarged portion is also adapted to be engaged by an adjusting-screw g, (see Figs. 1 and 7,) movable in a bearing in the frameB.

The machine as thus far described is the 45 same as that disclosed in the Letters Patent yabove mentioned.

' The frame B is provided with an extension C, shown'as integral therewith. 'On this extension is mounted a pair of idle pulleys 26 26.

5ev These pulleys are arranged upon opposite sides cfal vertical lane assing through the axisoi rotation o a pu ley 25,.fast on the drivingshaft and preferably somewhat beylow said pulley 25, as shown in Fig. 5. The 5 knife-shaft is provided with a pulley 23, adapted to receive a belt 24, extending from the pulley on the .driving-shaft 2. The belt 24 passes from said pulley 25 under one of saididleulleys, then around the pulley 23 6o off ,.the kni e-shaft, and thence around the otherk idle ulley and back tQ the driving# pulley.- Tfie driving-pulley is substantially cylindrical and has its axis parallel with the line in which the frame B is adjustable, so that the bight of belt formed by the three pulleys 26 25 26 will be maintained by them, so as to be always of the same forni` length, and tension in all positions of the frame B within its limit of adjustment. ln adjusting the frame B to vary the position of the knife with relation to the feeding mechanism the idle pulleys are moved with said frame, and they move the belt along the driving-pulley from side to side thereof without affecting the tension of the belt. In adjusting the knife it is therefore only necessary to loosen the clamping-screw 31'and move the knifeframe B along the main frame .A to its desired position and then to tighten the cla1np ing-screw. The idle pulleys and the belt will in this movement have been simultan neously adjusted with relation to the drivingshaft and drivii'ig-pulley.

To regulate the tension of the belt 24, one of the idle pulleys 26 is mounted upon the plate 29, which is adjustable onv an extension li of the frame B. in adjusted position by a suitable clamping device 29a.

It has been found in practice that the strain of the belt 24 upon the knife-shaft 2() causes said shaft to tend to tilt in the direction of such strain and to wear its bearings unevenly. It is very essential in a skivingmachine employing a rotary disk knife that the knife be'so mounted as to run steadily.

.I have therefore provided this machine with an additional bearing 27 (Shown in Figs. 1, 6, and 8.) This bearing is arranged above the pulley 23. The bearing is provided with a shank 28, adjustably held. in a clamp lr" of the knife-carrying frame. This bearing or su ort 27 may be adjusted with relation to t 1e rnife-shaft 2() to support the shaft against the strain ofthe belt and insure that said shaft shall run steadily. The bearing or support may also be adjusted toward the shaft as either of them becomes worn away,

The operation ofthe machine will now be briefly stated.

The parts bein0r adjusted to the positions shown 1n Fig. 1 the machine is startd by op,

erating a suitable clutch. (Not shown.) The Workman presents a piece of leather which is to be skived, with its edge against the edge guide 60. The rotary work-support and the feeding-disk grasp the leather Gand rapidly feed it along against the skivingknife, which so trims it as to form a beveled edge thereon. When it is desired to adjust the knife for a different width of skiving, it is necessary merely to loosen the clamping-screw 31. The frame B, which carries the knife and the idle-pulleys, may bc then' moved to position the knife pm perlj7 and the clamping-screw again tightene wiereupon The plate 29 is clamped IOO IIO

vmovement of the vidle pulleys AWith the knifeframe simultaneously shifts the driving-belt 24 along the driving-pulle 25 Without either slackening or tightening the belt. The operative connection between the knife-shaft and the driving-shaft is thus maintained in Whatever position the knife is' caused to occupy. y

.I 1.o sion is applied by'a belt-tightening device 52,

The machine embodies a knife-sharpening device 50,` driven by a' belt 5l, to'which ten- @as is usual in machines of this type. Such grinding device andits operative connections are shown and described in 'United States Letters Patent No. 609,868, granted to me August 3 0, 1898, and need not be herein further referred to.

.the machine-have 2ol description'some parts of een omitted or only briefly entioned,l vsince' they have nobearing on .e In the foregoing) 'described in detail Ain the patents referred to.

So miolr of 'the machine, however,'fas em- 'principle ofthe invention.

1". 1A skiving-machineA` com risin Aa ma by said knife-frame, and a belt connecting 4o saidv driving-pulley andsaid movable lto actua-te the latterjsaidbelt being adapted` to be passedv by the tension ofsaid 'belt is maintained 'sub stantiallyuniform -inA the varying relative ad'-' 1 conneeting', mechanismbetyveenfsar l lc bine-frame', a knife-frame,V a justa le with relation to the l .machine-frame,` va drivingshaft carried by said I'1 '1achine-frame and provided with a pulley, a movable knife carried by--said knifefframe,"id le pulleys also carried around said idle pulleys, wherechineframe, a'drivingfshaft mounted thereapair' efl idle ulleys pulleys, Wherebytheten'sion of thebelt'is rious adjustments ofthe two frames.'y

the present invention and have been already shaft, means for securing the knife-'sup ort riations mythe .a movabley ,knife sup orfted ter longitudinally-of the'`driving-shafttoward''l y 'g-thereomf'"means, wherebyfsadtwo x may'. bef .adjustedi=tof *vary the relative v ositions ofthe knife andl n -is n 1,'an`extension o 5 ames *out disturbingy the operative 'relation o ,Ork-fGflllf me@ 31-1" bythe knifeframe, f1-.b *Said @Italia 'sion,"andfa be ytf co'nne'ctingfsai zlrivingul-f ley and saidmovableknifeto operatefthe at-f' ter, said beltbeingpassed around said idle mounted in suitab maintained substantially uniform in the vamechanism-also mounted on said frame, a" knife-frame, a movable knife sup lorted` thereon, means whereby said two' ames. f i -may be adjusted to vary the relative position of the knife and Work-feeding mechanism, an extensioncarried by the knife-frame, a pair".7`o of idle pulleys carried by said extension andi f a belt connecting said drivingpulley and said movable knife to operate the latter, said belt being passed around vsaid idle pulleys, where.- y by the tension of the 'belt is maintained subsi 7 5 stantially uniform .in the' varying'T adjust-ff s. j

ments of the .knife toward' and' om":tl 1 e. Work-fe'eding'- mechanism, in combination With means permitting adjustment of oneof` aild idle 'pulleys to regulate the tension of the et. 4. A skiving-machine comprising "a suit'- able frame, a rotatable skivingfknife," knife connected to the frame for adjustment? in the direction of the length of the driving a driving-shaft Amounted thereon',

e Supportfor; theig 8'51.

in adjusted position, 'intermediate mec an- Ism connecting said driving-shaft and-knife to actuate the latter, and vmeans movable with the 'knifefsupport for effecting adjust@ ment of said connecting'mecham'sm simultaf-` neously with the adjustment lof the lmife yand knife-su port whereby to compensate for vai-Q position ofj the knife Withjrevlation to the driving-shaft.

l' 5. A skivin l-rnachine conciprisin ing-shaft, a pu ley mounted lin fixed relation thereon, a cutter, n fie'chanism.connecting: said-4 cutter andthe driving-pulley, and" means "Whereb said cutter may beadjustedlong tudinal y..of the' driving-shaft toward'and `frpm' the pulley whileimaintaiining theope ative Aconnection-i between .the cut-ter" and pulley.' f. .i SFA Shrine-medie@ Compris., ing-shaft -v vork-fe'eding mechanism and the driving sl 1aft," l and up or'tfor'the cutter'movablefinthe 'directlono ftheleng-th; of 'the driving-shaft; said; machinefhavlng prc v isi on for adjusting. said supportanfdieutl l "and from` the Work-feeding 'mechanism 6. onnecting mechanism withA Ashaft an cutter. I 1 7-.'In a' v skivin machine,{aiknife-sha e bearings, a knife -carrie on the end of said shaft, a. pulley also carrie by saidshaft near the opposite end, adrivin shaffgua beltnconnecting said driving-shaft f and said'pulle ,and a support for the end of the-'knife-shaft adjacent toy the pulleytoresist-lateral strain due to the belt and-to 'vent uneven'wear of the shaft-bearings'.

Pre- :1,55:

8. In a skivingdnachine, a shaft mounted In testimony whereof I have signed my in suitable bearings, a rotary skiVing-knife name to this specification in the presence, of mounted on said shaft, a pulley carried by two subscribing Witnesses. said'shaft near one end, and an adjustable CHARLES H. BAYLEY.

5 hallwbearing Afor said shaft at the end adja- Witnesses:

cent to the pulley to support the shaft against NELSON W. HOWARD, lateral strain. ARTHUR L. RUSSELL, 

